Can't help you with the link but you should only use the ignition key by itself. The extra weight of other keys is not good on the switch or the tumblers in the keyway.
My brothers a master locksmith and swears this kills bike and car igntion switches.
The only key fob I use is a lightweight rubberized plastic one. It came w/ the bike w/ the dealer name on it. Yamaha also sells one like it. In the wind, it sails and doesn't tought any part of the bike.